Facing brickwork with open perpends

PTB reference data

Original description

Material properties

Thickness: 55 mm

Dimensions: 230 x 50 x 55 mm

ISO 354 – reverberation chamber

αw

0.28

αp nach ISO 11654

125 Hz

0.05

250 Hz

0.15

500 Hz

0.45

1000 Hz

0.40

2000 Hz

0.30

4000 Hz

0.35

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Method (354): Measured